Refrigerant-134a enters a compressor at 180 kPa as a saturated vapor with a flow rate of 0.35 m3/min and leaves at 900 kPa. The power supplied to the refrigerant during the compression process is 2.4 kW. What is the temperature of R-134a at the exit of the compressor

Explanation:

Production planning: Planning is ideal so that there are the right resources, at the right time and in the right quantity that can meet the production needs of a period.

Strategies: The strategic development of production is the area that will assist in organizational competitiveness and in meeting consumer demand and needs.

Product and service design: Development of new products and services and their improvement, innovations and greater benefits

Production systems: Study of physical arrangements so that production takes place effectively according to the ideal layout for each type of product or service.

Production capacity planning: Analysis of the short, medium and long term related to production, and identification if necessary to obtain more resources, increase in staff, machinery, etc., to meet present and future demands.

Each area of ​​knowledge acquired will assist in the development of a professional career, as technical knowledge is essential in decision-making, provision, problem solving, the development of new ideas and innovation.

As the temperature of the material increases, the potential energy of the molecules increases. Thermal expansion occurs due to changes in temperature, and interatomic distances increase as potential energy increases.

Thermal expansion is used in a variety of applications such as rail buckling, engine coolant, mercury thermometers, joint expansion, and others.

It is to be noted that an application of the concept of liquid expansion in everyday life concerns liquid thermometers. As the heat rises, the mercury or alcohol in the thermometer tube moves in only one direction. As the heat decreases, the liquid moves back smoothly.

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The questions that would be relevant to conducting a building's life-cycle assessment? (Select all that apply.)

C. Will the building generate any pollution?

D. How long is the building expected to last?

Building's life-cycle assessment is a comprehensive evaluation of the environmental impacts of a building throughout its entire life cycle, including raw material extraction, transportation, construction, operation, maintenance, renovation, and demolition.

It aims to identify ways to reduce the building's environmental impact and promote sustainability. Relevant factors to consider in a building's life-cycle assessment may include energy efficiency, water usage, waste generation, greenhouse gas emissions, and the use of sustainable materials and practices. Additionally, the expected lifespan of the building is also a crucial factor to consider in the life-cycle assessment as it determines the overall environmental impact of the building over time.

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AASHTO assumes a deceleration value in calculating stopping sight distance (SSD) of B. 11.2 ft/s^2. This doesn't take any road defects into account.

The intended purposes of the profusion of ornamentation in Islamic art and architecture include: e) all of the above.

The intricate ornamentation found in Islamic art and architecture serves multiple functions. Firstly, it symbolizes the infinite nature of Allah (a). The repetition and complexity of patterns convey the idea of boundlessness and the eternal nature of the divine. Additionally, the ornate designs can serve practical purposes, such as helping to identify various parts of the mosque (c). These decorative elements can be used to distinguish areas like the mihrab (prayer niche), minbar (pulpit), or qibla wall. Lastly, while not explicitly mentioned in the question, it is worth noting that the elaborate ornamentation may also contribute to the aesthetic beauty of the art and architecture, creating a visually captivating and spiritually uplifting environment. However, the purpose of distracting and confusing enemies (b) is not typically associated with the profusion of ornamentation in Islamic art and architecture.

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Complete Question:
According to lecture, the profusion of ornamentation in Islamic art and architecture serves which of the following intended purposes?

a) it symbolizes the infinite nature of Allah
b) distracts and confuses enemies
c) identifies various parts of the mosque
d) a and c
e) all of the above

Answer:

Explanation:

To calculate the currents in the parallel branches, we need to know the impedance of each branch. That will be the sum of the resistance and reactance.

The inductive reactance is ...

  \(X_L=j\omega L=j2\pi fL=j100\pi\cdot 15.915\times10^{-3}\approx j4.99984\,\Omega\)

The capacitive reactance is ...

  \(X_C=\dfrac{1}{j\omega C}=\dfrac{-j}{100\pi\cdot 318.31\times10^{-6}F}\approx -j10.00000\,\Omega\)

Branch 1

The impedance of branch 1 is ...

  Z1 = 8 +j4.99984 Ω

so the current is ...

  I1 = V/Z = 240/(8 +j4.99984) ≈ 25.440∠-32.005°

The power factor is cos(-32.005°) ≈ 0.848 (lagging)

Branch 2

The impedance of branch 2 is ...

  Z2 = 5 -j10 Ω

so the current is ...

  I2 = 240/(5 +j10) ≈ 21.466∠63.435°

The power factor is cos(63.436°) ≈ 0.447 (leading)

Total current

The total current is the sum of the branch currents. A suitable calculator can add these vectors without first converting them to rectangular form.

  It = I1 +I2 = (21.573 -j13.483) +(9.6 +j19.2)

  It ≈ 31.173 +j5.717 ≈ 31.693∠10.392°

The power factor for the circuit is cos(10.392°) ≈ 0.984 (leading)

__

The phasor diagram of the currents is attached.

_____

Additional comment

Given two vectors, their sum can be computed several ways. One way to compute the sum is to use the Law of Cosines. In this application, the angle between the vectors is the supplement of the difference of the vector angles: 84.560°.

Answer:

F=200kN

Explanation:

Answer:

A) For a double drainage system the time taken for total settlement will differ from that of a single drainage system, because in a double drainage case clay water escapes from both sides unlike in a single drainage case. hence water and air will be be expulsed faster for a double drainage making it attain  total settlement faster.

B) for only single = 12 years

Explanation:

Given data :

ultimate clay settlement = 32 cm

settlement of clay in 3 years = 7.5 cm

Cv ( coefficient of consolidation ) =  1.5 x 10^-4 cm^2 /s

A) For a double drainage system the time taken for total settlement will differ from that of a single drainage system, because in a double drainage case clay water escapes from both sides unlike in a single drainage case. hence water and air will be be expulsed faster for a double drainage making it attain  total settlement faster.

note : Total settlement is the same in both drainage system.

B) Determine how long it will take for 7.5 cm of settlement to occur if there is only single

applying the relation  below

Tv = Cv t / H^2

where Tv = time factor , d = thickness of layer , H = drainage path

Given that Tv and Cv are constant in both cases

t ∝ H^2   hence

\(\frac{t1}{t2} = \frac{H^21}{H^22}\)  ------ ( 1 )

t1 = time for single drainage for d meters , t2 = time for double drainage  for d meters

equation 1 can be rewritten as

t1/t2 = d^2 / (d/2)^2

∴ t1 = 4t2

given that t2 = 3 years ( value gotten from question )

t1 = 4 * 3 = 12 years

On the vehicle with the circuit depicted, the brake lights are not functional. The technician examines the dmm readings while applying the brakes and notices that a short to ground might be the issue.

Motor vehicles include cars, trucks, motorcycles, vans, and other on- and off-road vehicles, as well as self-propelled agriculture and construction equipment. An airplane is a type of vehicle that can fly, has wings, and one or more engines. Despite the fact that it can also refer to other types of vehicles, such helicopters, the word "aircraft" is usually used to denote planes. Any piece of machinery used to transport goods, live animals, or both is referred to as a vehicle. Cars, trucks, buses, wagons, motorbikes, bicycles, boats, airplanes, and spacecraft are just a few examples of vehicles. Some dictionaries, meanwhile, underline that the phrase only refers to equipment that transports people, live cargo, or goods on land

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Explanation:

whats

the question choices

Comparing your present efforts and output with earlier efforts and output within your firm is known as internal benchmarking.

What does benchmarking mean in terms of IT?

To determine if your business is performing above, on, or below average, benchmarking is a formal method of comparing your organization's methods, processes, and results with those of others in your industry, and occasionally outside it. The main driving force is data.

Describe the Internet service with an example.

Internet Services refers to the portion of Data & Internet Services that is available over a public network. This covers internet access, email capabilities, website capabilities, and any other internet-related features or services that we might offer from time to time.

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Answer:

People have come up with all sorts of inventive ways of measuring length. The most intuitive are right at our fingertips. That is, they are based upon the human body: the foot, the hand, the fingers or the length of an arm or a stride.

In ancient Mesopotamia and Egypt, one of the first standard measures of length used was the cubit. In Egypt, the royal cubit, which was used to build the most important structures, was based on the length of the pharaoh’s arm from elbow to the end of the middle finger plus the span of his hand. Because of its great importance, the royal cubit was standardized using rods made from granite. These granite cubits were further subdivided into shorter lengths reminiscent of centimeters and millimeters.

piece of black rock with white Egyptian markings

Fragment of a Cubit Measuring Rod

Credit: Gift of Dr. and Mrs. Thomas H. Foulds, 1925

Later length measurements used by the Romans (who had taken them from the Greeks, who had taken them from the Babylonians and Egyptians) and passed on into Europe generally were based on the length of the human foot or walking and multiples and subdivisions of that. For example, the pace—one left step plus one right step—is approximately a meter or yard. (On the other hand, the yard did not derive from a pace but from, among other things, the length of King Henry I of England’s outstretched arm.) Mille passus in Latin, or 1,000 paces, is where the English word “mile” comes from.

And thus, the meter has and likely will remain so elegantly defined in these terms for the foreseeable future.

Explanation:

is this short enough

Answer:

True

Explanation:

We can make this conclusion because the term Computer graphics usually refers not to a computer language, but to a technology found in computers that allows the display of images on the computer.

This technology is made possible by certain computer hardware and software but not the "Graphics language electronic processing."

Answer: The mass of the substance is 20 g

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

\(Molarity=\frac{n\times 1000}{V_s}\)

where,

n = moles of solute

\(V_s\) = volume of solution in ml  = 250 ml   \((1cm^3=1ml)\)

moles of \(NaOH\) = \(\frac{\text {given mass}}{\text {Molar mass}}=\frac{xg}{40g/mol}\)

Now put all the given values in the formula of molality, we get

\(2=\frac{x\times 1000}{40\times 250}\)

\(x=20g\)

Therefore, the mass of the substance is 20 g

Answer:

nsnsndndnndndndnhhhh

Answer:

The relationship between power, energy, and time can be described by the following equation : P = Δ E s y s Δ t. P is the average power output, measured in watts (W) ΔEsys is the net change in energy of the system in joules (J) - also known as work. Δt is the duration - how long the energy use takes - measured in seconds (s).

Explanation:

1. Inverse square law states that the intensity of light varies inversely with the square of the distance from the source. It can be represented mathematically as: I = k/d², where I is the intensity of light, d is the distance from the source and k is a constant of proportionality.

This law is illustrated by the fact that as the distance from the source increases, the intensity of light decreases proportionally to the square of the distance.2. Given, diameter of the circular area, d = 200 mRadius of the circular area, r = d/2 = 100 mLamp illuminates a circular area of 200 meters in diameter with the illumination of the disc increasing uniformly from 0.5 meter-candle at the edge to 2 meter-candle at the center. The average illumination can be calculated as follows:Average illumination of the disc, I = (0.5 + 2)/2 = 1.25 meter-candleThe total light received can be calculated as follows:Total light received = (2πr² × I) = (2 × π × 100² × 1.25) = 78,540 lumensAverage candle power of the source can be calculated as follows:Average candle power = Total light received/4π = 78,540/4π = 6250 lumens3. Floodlighting is the use of high-intensity artificial light to illuminate a large area.

The purpose of floodlighting is to provide a bright and uniform light over a large area, typically for outdoor sports fields, stadiums, and other large events. It can be achieved using various types of lighting fixtures, such as floodlights, spotlights, and high-intensity discharge lamps. Suitable diagrams for floodlighting are shown below:

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As the IT administrator for a small corporate network, it's important to take the necessary steps to ensure the security of your internal web server. One way to achieve this is by changing the default ports that the web server is running on. Here's how you can go about doing this on a Linux system:

First, use the commands ss -lt and netstat to determine which ports the web server is currently running on. This will give you a better understanding of the current configuration of the server and the ports that need to be changed.

Next, modify the ports.conf file to change port 80 to 81 and port 8080 to 8081. This can typically be done using a text editor such as vim or nano.

Once you've made the necessary changes, restart the web server to implement the port change. This can typically be done using the systemctl restart command.

Finally, use netstat and ss -lt to verify that the server is now listening on the new ports. This will confirm that the changes were successfully implemented and that the web server is now running on the obscured ports.

Overall, changing the default ports on an internal web server can be an effective way to improve security and make it harder for potential attackers to target your system. As an IT administrator, it's important to stay vigilant and take proactive steps to protect your network from threats.

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If you see cars parked on both sides of the road facing the same direction that means they have one direction of travel, and that it is seen as a one-way street.

The rule states that if Cars parked are known to be facing the same direction on both ends of the street, it clearly shows the direction of travel, as well as the fact that it is a one-way street.

Note that a lot of people do not always follows the rules about the right direction they can park on a public street. Cars that are parked in both opposing directions connote the fact that the street should be two-way.

Therefore, If you see cars parked on both sides of the road facing the same direction that means they have one direction of travel, and that it is seen as a one-way street.

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Answer:

The wind force on the screen is approximately 5,341.5936 \(lb_f\)

Explanation:

The speed of the wind, v = 36 mph

The width of the outdoor movie, w = 70 ft. wide

The height of the outdoor movie, h = 20 ft. tall

The drag coefficient, Cd = 1.15

We have;

\(C_d = \dfrac{F}{\dfrac{\rho \cdot v^2 \cdot A}{2} }\)

From which we have;

The wind force, F = 0.00256·\(C_d\)·v²·A

Where;

A = The cross sectional area of the rectangular outdoor movie screen, A = w × h

∴ A = 70 ft. × 20 ft. = 1,400 ft.²

The wind force, F = 0.00256 × 1.15 × (36 mph)² × 1,400 ft.² = 5,341.5936 \(lb_f\)

The wind force on the screen, F = 5,341.5936 \(lb_f\).

The wind force on the outdoor movie screen is;

F = 23437.26 N

We are given;

Wind speed; v = 36 mph = 16.0934 m/s

Width of screen; w = 70 ft = 21.336 m

Height of screen; h = 20 ft = 6.096 m

Drag coefficient; Cd = 1.15

Now formula for the drag force is;

F = ½•C_d•ρ•A•v²

Where;

F is drag force

C_d is drag coefficient

ρ is density of object

v is speed of object

A is area

Let us use density as 1.21 kg/m³

Area; A = wh = (21.336 × 6.096)

Thus;

F = ½ × 1.15 × 1.21 × (21.336 × 6.096) × 16.0934²

F = 23437.26 N

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The two options are based on the "rule of thumb" that a rotor should have at least.030 inches of material left on it in order to be machined.

When a thicker area of the brake rotor rotates through the calliper, it pushes back against brake fluid, which can be felt at the brake pedal, causing brake pedal pulsation and other circumstances like steering-wheel shaking while braking.

Although metallic brake lines are also available, brake lines are often constructed of rubber or a rubber and synthetic material combination. Their length and diameter vary.

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Directly proportional.

As the inductive reactance is directly proportional to the frequency, by increasing the frequency the inductive reactance of the inductor increases.

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Answer:

b. American Society of Mechanical Engineers

Explanation:

The "American Society of Mechanical Engineers" (ASME) is an organization that ensures the development of engineering fields. It is an accreditation organization that ensures parties will comply to the ASME Boiler and Pressure Vessel Code or BPVC.

The BPVC is a standard being followed by ASME in order to regulate the different pressure vessels and valves. Such standard prevents boiler explosion incidents.

Given:To Compute the absolute value of the product of two inputs. The input values are x and y.The output values is z.Solution: Absolute value means to remove the negative sign of the value and make it positive.

Absolute value of x is denoted by |x|.Absolute value of y is denoted by |y|.Absolute value of x*y = |x|*|y|.The mathematical formula of Absolute value of x*y = |x|*|y|.The mathematical formula of absolute value is given as-If x is greater than 0 then the absolute value is xIf x is less than 0 then the absolute value is -x.

We have to find the absolute value of x*y. So we can use the formula of absolute value of x*y = |x|*|y|We are given two inputs in the program i.e x and y.The absolute value of x is computed using function fabs(x).The function fabs(x) takes one parameter i.e x and returns the absolute value of x.

The absolute value of y is computed using function fabs(y).The function fabs(y) takes one parameter i.e y and returns the absolute value of y. The absolute value of x*y is computed by z=fabs(x*y).

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The primary objective of this project is to design a building in accordance with the structural requirements for LRFD for steel as defined in ASCE 7/IBC. The building's materials are defined in the following terms:

Light-weight concrete flooring over deck with a thickness of 5 inches.
ASTM A992 (Gr.50) for all W shape Beams, Girders, and Columns.
HSS Braces (ASTM A500) or W shapes (ASTM A992, Gr.50).

Dead Loads: The building's dead load will be made up of a variety of elements, including:

Roof: Roofing Materials (Water Proofing, etc.) = 4 psf.

18" Gage deck = 3 psf.
Light-weight concrete 5 in thick.
Framing & Fire proofing = 8 psf.
Suspended ceiling = 4 psf.
Mechanical & Electrical = 4 psf.
Solar panels & assembly = 9 psf.

Floor: Tile including assembly = 9.5 psf.
18" Gage deck.
Light-weight concrete 6 1/4 "= 3 psf.
Framing & Fire proofing = 15 psf.
Suspended ceiling = 5 psf.
Mechanical & Electrical = 5 psf.

Wall: Parapets on roof (outer boundary only) = 25 psf (3.5 ft high).
Glazed walls (outer boundary only) = 18 psf (ground to roof level).

The live load of partitions is taken into consideration as appropriate. Flooring requires a two-hour fire rating. The following deflection requirements are in effect:
L/360 due to live load deflection in all interior Beams and Girders.

L/180 due to total load for all spandrel Beams and Girders.
the building's seismic design should consider the values of spectral response acceleration parameters for the given location, which can be found using the USGS website.

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The FDs that hold over the instance of relation r given are abc->e and cd->eb, while the FD b->d does not hold.


Abc->e: This means that if we know the values of attributes a, b, and c, we can determine the value of attribute e. Looking at the relation r, we can see that the values of a, b, and c uniquely determine the value of e. For example, if a=1, b=2, and c=3, then e must be 4. Therefore, the FD abc->e holds over the instance of relation r.


B->d: This means that if we know the value of attribute b, we can determine the value of attribute d. Looking at the relation r, we can see that this dependency does not hold true. For example, if b=2, there are two different values of d that could be associated with that value of b (d=5 and d=7). Therefore, the FD b->d does not hold over the instance of relation r.

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When resolving attempted relative import with no known parent package, one should consider the following steps

Step 1: Ensure that the module is part of the package To guarantee that a module is a part of a package, you must ensure that it is in the same directory as the package's __init__.py file. Also, ensure that you've created an __init__.py file for each package directory

Step 2: Correct  he relative import pathsIf you're still having trouble with relative imports after ensuring that the module is part of the package, you might have to adjust the relative import path. In most cases, you'll need to change the path from relative to absolute:from . import module # relative importfrom package import module # absolute import

Step 3:Check your PYTHON PATH You should check your PYTHON PATH settings if you're still experiencing issues with imports. PYTHON PATH is a variable that tells Python where to look for modules and packages on your computer. You should ensure that your package directory is listed in your PYTHON PATH variable.

Step4: Change the package name Finally, if none of the above measures work, you may need to change the package name. Changing the package name will give it a unique identifier that Python can identify without confusing it with other packages. In addition, make sure that the new package name is reflected in all imports throughout your code.
To resolve an attempted relative import with no known parent package, you can follow these steps:

1. Verify file structure: Ensure that your project follows the correct file structure with appropriate `__init__.py` files in each directory. This allows Python to treat the directories as packages, enabling relative imports.
2. Correct import statements: Ensure that your relative imports are accurate. For example, if you have a package structure like this:```
my_package/
   __init__.py
   module_a.py   module_b.py
`
You can use a relative import within `module_b.py` to import from `module_a.py` like this:
```python
from .module_a import some_function```

3. Run as a package: Make sure you're running your script as a package instead of a standalone script. If you're using the command line, you can do this by navigating to the parent directory of your package and running the following command:
```bash
python -m my_package.module_b
```
4. Check your Python version: Ensure that you're using Python 3, as relative imports are not supported in Python 2.

5. Use absolute imports: If relative imports continue to cause issues, consider using absolute imports instead, specifying the full path from the project's root directory.

By following these guidelines, you should be able to resolve issues with attempted relative imports and no known parent packages in your Python project.

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Power delivered to the runner is approximately 2.34 MW and the hydraulic efficiency of the Pelton wheel is approximately 88%.

Step-by-step explanation:

Calculate the coefficient of bucket using the bucket deflection angle:

cos(170°/2) = cos(85°) = 0.087

coefficient of bucket = 1 - 0.087 = 0.913

Calculate the mass flow rate:

mass flow rate = density x volumetric flow rate

= 1000 kg/m3 x 1 m3/s

= 1000 kg/s

Calculate the power delivered to the runner:

Power = mass flow rate x acceleration due to gravity x head x efficiency

= 1000 kg/s x 9.81 m/s2 x 270 m x 0.98 x 0.913

= 2341596.6 W

≈ 2.34 MW

Calculate the hydraulic efficiency:

Hydraulic efficiency = power output / power input

= 2.34 MW / (1000 kg/s x 9.81 m/s2 x 270 m x 0.98)

≈ 0.88 or 88%

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